筆者在同等條件下試驗對比發現，薯秧倒栽比順栽可提高產量1倍以上。倒栽的薯苗比順栽的生長緩慢
，約需7tianshijianyeyejiancaichangchuxinya，yihoumanmanxingchengzhujing。youyujingzhongshudaozuzhishusonggenbuxishoudeshuifenjiyoujiyangliaodefangxiangnizhuan，qishusongsudujianman，zheyangyoujifeiliaodaliangjiyazaigenbu，shidishangdezhujingshengchanghuanman
，youliyushukuaipengda。qijutizuofashi：剪去薯莖頂尖的2節或3節莖，然後剪成帶有2—3gejieweideshuyang，zaibashuyangshangmiandiyihuodierjiedeyebingheyepianjianqu，baoliuzuixiamiandeyijiejingdeyebingheyepian，daozaizaigaolongshang
，yiliuzhedeyebingjibuluchulongmianweiyi，miaojuyibanwei14厘米左右。